The Xlendi Bay shipwreck (Gozo, Malta): a petrographic and typological study of an archaic ceramic cargo

2021 ◽  
pp. 1-7
Author(s):  
Maxine Anastasi ◽  
Claudio Capelli ◽  
Timmy Gambin ◽  
Jean-Christophe Sourisseau

Abstract An underwater survey off the southwest coast of the island of Gozo revealed a well-preserved shipwreck 110 m below the surface. The site belonged to a previously unknown wreck with a cargo of volcanic millstones and ceramic amphorae dating to the 7th century BC. This article presents the first results of thin-section analysis taken from the pottery objects, and concludes that the ship was carrying a heterogeneous cargo of amphora-borne goods from the Maltese islands, North Tunisia, and possibly Sicily, making it the earliest, known shipwreck in the central Mediterranean; and provides the earliest evidence for Maltese external trade in the central Mediterranean.

1987 ◽  
Vol 53 (S3) ◽  
pp. 53-59
Author(s):  
Carol Allen

Terms usedGrog relates to clay inclusions within the pottery which appear as discrete pieces of varying sizes. Usually such entities are assumed to be crushed parts of pre-existing pots.Sizes of quartz, grog, shell or other inclusions referred to in the analysis concern measurements taken on the longest axis of the grain or piece. In each case the maximum measurement stated is the longest observed in that particular section, and does not infer that other grains in the sample were all of this size, unless stated.Percentages of materials shown as included in the clay matrix are estimates expressed by area using comparison charts (Terry and Chilingar 1955, and Flugel 1982, 247-257).


Author(s):  
F. Chayes

SummaryThin-section analysis is essentially an areal measurement, the measurement area usually being the upper surface of the section. If transmitted light is used for the measurement, the apparent areas of opaque grains will in general be somewhat larger than their true areas on the measurement surface. For strictly spherical opaque particles in a transparent matrix the expected excess of apparent over true area is shown to be (πr2k)/(2r + k) where r is the spherical radius and κ is the thickness of the thin section. A table shows the relation between true and apparent area as a function of r/k.


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